This was a great book in so many ways, the caveat being it's geared towards muscle cars and not trucks. The 3-V 5.4L engines used in trucks are are barely mentioned and there isn't a single test of them in the book. Unfortunately, that was my focus of research. I learned a great deal about the Ford modular engines in general and even stuff that would apply to the 5.4L truck engine... but, overall, I found the book more of a "dessert" than a "main course." Had I been a car guy, the reverse would have been true. Viewed in context, there is a great deal of worthwhile information in Holdener's book... especially if you need information on the various supercharger and turbocharger kits out there. The book is laid out well and the material is presented in an easy-to-digest format.